Quarter	US Dollars, sum over component sub-periods
1996-01-01	421116531.62070900
1996-04-01	580684293.25453200
1996-07-01	720627939.50512600
1996-10-01	769274938.25331100
1997-01-01	787398863.12170600
1997-04-01	947602163.61256800
1997-07-01	290406236.26619900
1997-10-01	925084439.11467990
1998-01-01	639413865.16230700
1998-04-01	251045615.34868100
1998-07-01	493774316.75923100
1998-10-01	1285657180.64606000
1999-01-01	440021759.10418300
1999-04-01	648844627.74250300
1999-07-01	605081344.11590100
1999-10-01	1029581433.71941000
2000-01-01	257676002.76916397
2000-04-01	179305271.88067898
2000-07-01	499736946.11915600
2000-10-01	636464920.01644200
2001-01-01	226971796.18306500
2001-04-01	223694872.67668900
2001-07-01	657879519.67543900
2001-10-01	770273004.18851800
2002-01-01	397113089.38881700
2002-04-01	601427915.97357600
2002-07-01	412165389.32653500
2002-10-01	1163543106.89508000
2003-01-01	907127429.07824800
2003-04-01	671311901.83103900
2003-07-01	755315861.86369100
2003-10-01	1293423762.42678000
2004-01-01	1017621963.43513000
2004-04-01	353137141.01656200
2004-07-01	520860515.71373194
2004-10-01	1351104600.50401000
2005-01-01	525494005.97214800
2005-04-01	604085257.91330990
2005-07-01	507312372.22584903
2005-10-01	1083506405.38985000
2006-01-01	743390746.36805500
2006-04-01	361982893.06845200
2006-07-01	735412426.04601100
2006-10-01	628183249.40973100
2007-01-01	888936178.60545710
2007-04-01	369373563.48098800
2007-07-01	709435768.78603400
2007-10-01	610058938.35453900
2008-01-01	1050243419.68780000
2008-04-01	324908083.14895004
2008-07-01	392871501.51482100
2008-10-01	745994931.14793410
2009-01-01	624508406.61647700
2009-04-01	762620811.42437710
2009-07-01	670868732.70864600
2009-10-01	831372151.76870200
2010-01-01	394373993.06139004
2010-04-01	658215593.13829300
2010-07-01	696573330.72253800
2010-10-01	1589422199.96781000
2011-01-01	700019451.58972000
2011-04-01	656319511.51126200
2011-07-01	917776716.72042400
2011-10-01	1182953680.50837020
2012-01-01	1088471033.05304000
2012-04-01	855329508.98886100
2012-07-01	920992053.44624000
2012-10-01	1545684066.21020980
2013-01-01	679539768.62765200
2013-04-01	828010250.10812390
2013-07-01	801386838.49312700
2013-10-01	1328446966.19565000
2014-01-01	703062608.27965900
2014-04-01	774760625.98608600
2014-07-01	831800381.31077300
2014-10-01	605591813.85361710
2015-01-01	520087057.78400600
2015-04-01	631553258.02999590
2015-07-01	433561996.02333000
2015-10-01	701429318.71872200
2016-01-01	347172201.09312800
2016-04-01	414422791.75933000
2016-07-01	671755027.51723800
2016-10-01	661590649.86958800
2017-01-01	414501711.55424905
2017-04-01	362926393.53057900
2017-07-01	451004390.07402200
2017-10-01	739481027.91098090
2018-01-01	410445124.27731600
2018-04-01	491968652.05808000